Vibrating grate in a heating boiler

Abstract

According to the invention it is suggested that, in a heating boiler with a vibrating grate (3), a supply pipe (6) from which fuel material in particle form, in particular pellets, is supplied to the grate, is mechanically connected to the grate (3) and arranged to freely support the grate, which is thereby freely suspended in the combustion chamber without contact with the bottom and walls of the combustion chamber. A vibrating means (19) is also mechanically connected to the supply pipe (6) and arranged to produce a rectilinear movement and to function as drive source to feed the fuel particles to the grate via the supply pipe (6). The vibrating means gives the fuel particles a toss movement obliquely upwards and forwards in the supply pipe and on the grate whereby the fuel particles move onto the grate and towards the end of the grate opposite the supply pipe (6).

We claim: 
     
       1. A means in a heating boiler having a grate onto which fuel material is supplied in particle form from a supply pipe, a vibrating means being arranged to cause the grate to vibrate in order to give the fuel particles a toss movement up from the grate depending on the oscillation effect produced by the vibrating means said supply pipe being mechanically connected to the grate and arranged to freely support the grate, which is thus freely suspended in the combustion chamber without contact with the bottom or walls of the combustion chamber, said vibrating means being mechanically connected to the supply pipe and arranged to produce a rectilinear movement as well as functioning as a drive source to feed the fuel particles to the grate via the supply pipe, said vibrating means being additionally arranged to continuously impart to the fuel particles a toss movement obliquely upwards and forwards in the supply pipe and on the grate whereby the fuel particles move onto the grate and towards the end of the grate opposite the supply pipe, said supply pipe being resiliently suspended on a front door of the heating boiler by means of cross-stays secured to the supply pipe, brackets secured to the front door, and springs arranged between the cross-stays and brackets. 
     
     
       2. A means according to claim 1, wherein a pipe for gas glow is connected to the lower side of the grate to direct a gas flow up through the grate, said pipe preferably being provided with a fan motor for forced supply of air to the combustion point. 
     
     
       3. A means in a heating boiler having a grate onto which fuel material is supplied in particle form from a supply pipe, a vibrating means being arranged to cause the grate to vibrate in order to give the fuel particles a toss movement up from the grate depending on the oscillation effect produced by the vibrating means, said supply pipe being mechanically connected to the grate and arranged to freely support the grate, which is thus freely suspended in the combustion chamber without contact with the bottom or walls of the combustion chamber, said vibrating means being mechanically connected to the supply pipe and arranged to produce a rectilinear movement as well as functioning as a drive source to feed the fuel particles to the grate via the supply pipe, said vibrating means being additionally arranged to continuously impart to the fuel particles a toss movement obliquely upwards and forwards in the supply pipe and on the grate whereby the fuel particles move onto the grate and towards the end of the grate opposite the supply pipe, said vibrating means being mounted at the supply pipe such that its center line forms an acute angle with the direction of transport of fuel material. 
     
     
       4. A means according to claim 3, wherein said acute angle is about 25°-40°. 
     
     
       5. A means according to claim 4 or 3, wherein said acute angle is adjustable by adjusting the vibrating means. 
     
     
       6. A means according to claim 3, wherein said acute angle is about 30°-35°.